Perforating apparatus for circulating cement

Details Perforating apparatus for circulating cement Perforating apparatus for circulating cement

1990-11-23

1992-07-21

Neuder, William P.

Wells

Means for perforating, weakening, bending or separating pipe...

With disparate below ground feature

175 46, 102319, 102321, E21B 43117

Patent

active

051314657

ABSTRACT:
In accordance with an illustrative embodiment of the present invention, a perforating gun apparatus for forming holes in a well casing through which cement can be circulated includes a mandrel, four arm-mounted, shaped charge carriers on the body, and bow springs on the body in the plane of each carrier for biasing the carriers outward into sliding contact with the well casing. The charges form evenly distributed series of vertically arranged holes the casing, without damage to an outer casing string, so that cement can be circulated through the holes and into the annulus without channeling.

REFERENCES:
patent: 3104709 (1963-09-01), Kenneday et al.
patent: 3371741 (1968-03-01), Haxby
patent: 3405769 (1968-10-01), Shore et al.
patent: 3415321 (1968-12-01), Verghiattis
patent: 4844167 (1989-07-01), Clark

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